Which of the following are not true for petroff s equation? – McqOptions

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1.	Which of the following are not true for petroff s equation?
A.	Shaft is considered concentric with the bearing
B.	Bearing is subjected to light load
C.	Is used to find coefficient of friction
D.	Frictional torque is given by fpr l
Answer» E.

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For a hydrostatic thrust bearing,<br>Thrust load=450kN, shaft speed=730rpm, shaft diameter=450mm, recess diameter=310mm,film thickness=0.15mm,viscosity of lubricant=160SUS and specific gravity=0.86.
For a hydrostatic thrust bearing,<br>Thrust load=450kN, shaft speed=730rpm, shaft diameter=450mm, recess diameter=310mm, film thickness=0.15mm, viscosity of lubricant=160SUS and specific gravity=0.86.
In hydrodynamic lubrication, film thickness remains unaffected by change in speeds.
Which of the following are not true for petroff s equation?
Viscosity is defined as the external resistance offered by a fluid to change its shape or relative motion of its parts.